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Royal Observatory Review
Greenwich is on the prime meridian at 0° longitude, and the ultimate standard for time around the world has been set here since 1884, when Britain was the world's largest and most important maritime power.
The observatory is actually split into two sites, a short walk apart—one devoted to astronomy, the other to the study of time. The enchanting Peter Harrison Planetarium is London's only planetarium, its bronze-clad turret poking out of the ground like a crashed UFO. Shows on black holes and how to interpret the night sky are enthralling and enlightening. Even better for kids are the high-technology rooms of the Astronomy Galleries, where cutting-edge touch screens and interactive programs give young explorers the chance to run their own space missions to Ganymede, one of Jupiter's moons.
Across the way is Flamsteed House, designed by Christopher Wren in 1675 for John Flamsteed, the first Royal Astronomer. A climb to the top of the house reveals the 28-inch telescope, built in 1893 and now housed inside an onion-shaped fiberglass dome. It doesn't compare with the range of modern optical telescopes, but it's still the largest in the UK. Regular viewing evenings reveal startlingly detailed views of the lunar surface. In the Time Galleries, linger over the superb workmanship of John Harrison (1693–1776), whose famous Maritime Clocks won him the Longitude Prize for solving the problem of accurate timekeeping at sea and greatly improved navigation.
A brass line laid among the cobblestones here marks the meridian, one side being the Eastern, one the Western hemisphere. As darkness falls, a funky green laser shoots out across London for several miles, following exactly the path of the meridian line.
The Time Ball atop Flamsteed House is one of the world's earliest time signals. Each day at 12:55, it rises halfway up its mast. At 12:58 it rises all the way to the top, and at 1 exactly, the ball falls.
The steep hill that is home to the observatory gives fantastic views across London, topped off with £1-a-slot telescopes to scour the skyline. Time a walk to catch the golden glow of late-afternoon sun on Canary Wharf Tower and head back into Greenwich via the rose garden behind Ranger's House. Youngsters under five are not usually allowed into the auditorium. Tickets can be purchased ahead online.
- Address: Romney Rd., Greenwich, SE10 9NF | Map It
- Phone: 020/8858–4422
- Cost: Astronomy Galleries free; Flamstead house and Meridian Line courtyard £7; planetarium shows £6.50; combined ticket £11.50.
- Hours: Daily 10–5 (May–Aug., Meridian courtyard until 6); last entry 30 min before closing; last planetarium show 4
- Website: www.rog.nmm.ac.uk
- Tube: DLR: Greenwich.
- Location: Greenwich
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